The printed output of the following program is( ) main( ) { printf("\n*s1=%15s*", "chinabeijing"); printf("\n*s2=%-5s*","chi"); } A. *sl=chinabeijing * *s2=**chi* B. *sl= chinabeijing * *s2=chi * C. *sl=*chinabeijing* *s2=chi* D. *s1= chinabeijing* *s2=chi *